| RefNo | LBO/4/21 |
| AltRefNo | LBO/4/40 |
| Level | File |
| Title | Copy letter from Franciscus Slusius, Leodii, to John Wallis |
| Date | 25 July 1670 |
| Description | ' Concerning Ricciolio's Argument against the Motion of the Earth, taken from the Acceleration of Falling Bodyes. '
Includes a pen and ink geometric diagram on p40 |
| Language | Latin |
| Extent | 3p |
| Format | Manuscript |
| AccessStatus | Open |
| RelatedMaterial | For drawing see LBO/4/22; |